Aligning and fitting jig for connecting rods



u This invention relatesv yto Vmachiner tools Mannion' o, coilANDQRALPE; B, avaricia oai'tanploanrroanrm Y l ALIGNING ND'FITTINGHeronoonlvnorrnanona Y and particularly pertains to an aligningandcombustionfmotors.

fitting jig forV connecting rods of vinternal nt gconnecting rodbearings. i? v I In carrying out 'thisvobject 'We 'provide' adeviceincluding a'mandrel having a portion which vmayjbeexpanded--orcontracted to]A snugly lreceive fthe .bearing 1 of aconnecting rod Vorfthe like; The f mandrel may be rogf fatedV andmovedfaxially sorv vit 4inaylbe clampedin-a set positiongy Thelnandrelisb-v Y arrangedat riglitangles to a face plateA for use inaligningpistons on'connecting rods.

@ne form which *the .invention Amay 1asf sumeisexempliiied'intheli'ollowing descrip'-4 J tion and illustrated. by Wayof example inthef'accompanying drawings, fin` which:

Fig. 1I isa view in vertical and llongifftudiial .section'of a 'deviceembodyingthe 1' preferred: 'form Tof.` our invention.

Fig-`2`is aftransverse section through the 1 device taken ,Online2-2'ofFig. 1.l

V'Figa Sis ay fragmentaryview in perspec-4 tive of the connectionbetween the mandrel f sleeve and its nut;

. Referring more particularly tothe accom-I panyingdrawings, 10.indicates a frame hav-t vnag a bottom flange'by Which it maybe lboltedor otherwise secured toa Work loenchl'v The frame 10 is formed With apartially split bearing 11 Vhaving a 'bore 12 .which slid-ably androtatably receivesthe shank of a mandrel `14C. This .mandrel is formedwith a taperedv 'end 15 vvvhiohterminatesin la threaded portion 16. A,mandrelV sleeve 17 is provided and Yis. formed With a tapered i I borecoincidingwith the tapered .end of the afsemi-annular 'lip-19 whichengagesV anl annularrgroove 2O formed in a nut 21; l This .nut iskthreaded onVV the threaded extremity K of the mandrel.Vr Itis obviousthat Avvhenthe nut is rotated the mandrel sleeve will move vaxially 'inunison therewthand 'will v@mand n 'It gi'si'theprinoipalv objec'tof thepresent*l invention to provide-a `generally improved f device 'of thecharacter 'described AWhichivvill 'lfacilitateand simplify-*theoperationsof gning pistons on connecting rods and 1n contract *depen ingupon which-direction?y rn; ismoved."` v

i connecting rod j. when Itting the 'bearing te'gr'al.With one Vendoithe' bearing .11., The vWorking*surface 23 yofthe ,face platej22is orWhen/'aligning'piston onftherod'vvith `The'bearing,.1..Toassistin thekrlatter-oipera-` 'n Y. t1on,javerticalface plate 22`is Vformed in#yexactly atrightI anglesvto'thez loiigitud inal' 1` l. axis-of;themandrelig'Y Thereforelwhen Athe I* `l .Y connecting rod bearing is:ysnugly'fiitted ioni.

:the mandrel Sleeve,- uie; Siae Wanv `of 'a piston {70-Y'thereonshouldalign' With theuvvlorking sur;y

face 23 of the `face platef225 VShould it not valignthe'revvithgftherodyis ybent until a pere feet ali gnment between 'fthe'surfaces is efvfiected. A

1 f-Du'ring the operation-lijnendescribed it is v etten necessarytofrequently movefthe mane-1y To facilitate Athi-s; We have-providedmeans ion-.f aXial-lyjvmving the i mandrel. Y The- .right'angles to themand'relf'l."r The: shaft 24 is orm'edvvith a'lpinion25 which meshesWithfraclrteethvr 26 vformedon'theshanky of the.VY mandrel 14. These4rack teeth are formedcompletely around 'the mandrel so f y that thelmandrel maybe rotateda's desired Without affecting the toothedv*engagement bet-Ween it'and the pinion 25. g

i The vShan 24. Shad from axial movement vby a pin 28` in the-framevvhicliengagesan angular groove 29 formed vadjacent one'yend of theshaft. Thisfend of the shaft projects a distance rom-the'fside of theVframe and is fitted With a. handfbar 30 softhat'it may .'re `rotated toadvanceor retract tl'iemandrel sleeve relatively tothe vface`platev22..y

'During the "iittingof 'a f connecting rod .hearing'or when `reamingtheWrist f pin i end thereof, .it isnecessaryto secure the mandrel against.rotative and axial-,movement.1l vFor this reason the bearing 10ispartiallysplrit as* y 'before stated fand. -isv fitted 'Withl a clampingf screw V31.' This clamping Vscrew `is formed With-an enlarged upperend32 to receive a liandbar `33. -A- shoulder isjforrnedI at thejunction.between this enlarged upper end and theoshank;` ofthe scremavvhichshoulder' bears against the upper portion of the bearing 10. The shank`of thefolamping screw extends througha 'bore in'thenpperportion of thebearing and threadedly rengages aA tapped hole inthe lower portion ofnthe bearing. It isfobvi-ous that when 4the screw is turned to'threadits shank into the tapped.

Y hole, the upper and lower portions ot" the yburnished and lmay.besoraped down.

above ,operation is then `repeatedi :until the entire surface ofthebearing vbears on the.v

vthe fbearing `10andthe mandrel sleeve is adjusted .onthe-mandrelflhymeans of the nut 21 until it :is exactly the. same dianrieter as rthelcrank ,pin .on nwhich vithe bearing is to be ultimately mounted. yrlfhe bearing halvesare then assembled on l themen rel sleeve and'drawn' tightly together toasnugu vly embrace the Asleeve. The .bean'ngis then forcefully rotated about the mandrel sleeve and .then removedfrom the rmandnel. Any high vspots :ooeurin'g in Vthe bearing will vbemandrel sleeve.A As the mandrel sleeve lis adjusted to .the yexact sizeof qoranlV pm, the

bearing When properl7 fitted may be mount- .eddireetlv-en the' crank pinand tightened Without rnrther Aiitting.

nateur invention,

The above is a considerable'improvement over ,prior methods .whichrequired ythe bear- .ingto 'be ittedudirectly on vthe Crankshaft .whichtot-ten required the mechanic to VWerl; beneath .-.the automobile in -an`inseln/emi,ent position. l

.ln aligning a piston with 'theleonneeting rod bearing, -the clampingsenev is 'released to permit axial movement of the mandrel 14 and -thebeaningis 'arranged on rtheV mandrelgsleeve 17. V.The zsleeve :171is-then eX- panded :by I.means kof :the nut 2l ,to tightly grip fthebeanine. The'sha-'lt 2e is then rotated to move ,the mandrel axially tobring the Wall of the fpiston lin ;olose Yproximity to the 'sur-fase 23of the face lplate 22. 'li the t-Wo sur'aCes-arefin alignmentqthesleeve-17 -is 'contrae-ted to release `the 'bearing so that the rod'and pistonmay be removed. lffthe'Wall-oithe piston does not align .withtheenriacefQB, the rod is bent until lit does. During this sqpera'tionit `is necessary to frequently move the piston toward and away '-fromthe giace plate. llhe eurovision of the lrack and gear-device foraxially 'movm ing the mandrel to accomplishthis, greatlyjfa'cil'itatesithe operation- .it 4:is .jobvious A-thatour device 'maylbe .used in Wairious other capacities. suc-h assupportingfaconneetingiitodwhen teaming the Wrist piibearmg er '-Whenlitting .a Wrist pin. i

lll/*hills 'We have 1.sliown Jthe pre eried fiform .lit-lis tobezundvetoed that et right :angles tothe ianis ofthe M Vstationary relativelyto the irale The various changes in its construction may be made .bythose skilled in the art Without departing VY,from 4.the invention asdeiined in the appended claims.

lHaving thus described our invention, what Weelaim "and'desire'to'secure by Letters .Patent is:

l. A deviCe of Y'the`c`haraoter described .comprisingl a, trame, a Ythereby, "ace plate on the ame' disposed operative ,means forfree' gtdrei, land rmeans for ,hold-1-,@

dering the Airst fnamed'meafns inefieotive,

AA device vof; the lCharacter described comprising a 'ir-ame, a Ymandrelno' trana-bhT `r.and dreeipreeabij; mounted a ,radially expansible endon said m a face plate station scent v-said .enp'ann .drei l:an dv 1 atv:if-ight le end :on the inan= tive means rior-reciprocating :saidmandrel. e

o. A, device of, the' ohara/cer comprising a fil-came., a @mandrelmandrel 'eairied v fheleon the :naine normally ff 'v md recipro'cably{monntedzther-ein,

a 'face l.plate Vstationsrily .held yon. the v adjacent saideXpa-.nsible end on the' mandrel and at right angles fther to, andoperative means for 'reoiproeating said mandrel, and means vfor iolding.said'man'lrel Statie relati-velj,7 fto ithe drameV and render,liirstinamed means -ineeotive A device oi the sicharanter kdesoribedcomprising a frame, a inlandrel normally. tnr'n'ablv and reeiprocablyinermi-ed..therein,

a radialh7 expansible .end on said mandrel,

a '-rlaee fplate 4stationarilgT v'held on the iframe adjacentsaiidezrpansibleend ron the fmandrel and at right anglesrthere'to, andoperative means for reeiproeatmg 'said Iirland-mel 4said means.comprising fraolteeth termed evon' the mandrel, a pinion carried .bythe "fname and in mesh with said teeth, and means flor revelfting thepinion.

5. A Vdevice of fthe character described comprising a. frame, .a mandrelcarried thereby, a faceplate on v=lthe iframe disposed at right 'anglesto the yanis or :the mandrel, and m'eans :for reciprocating saidmandrel, said means comprising iracl teeth iorrned on the mandrel, KLapinion eairri'ed by the iframe andginmeshwith said teetln'and means torrevolving` the ip-inion. l .i

i6. A ydevice vof lthe charaote: 4des'ori'beiil comprising a frame,amandrel normally turnably and reeiprocablyimonnted therein, a radiallyvexpansible end on said mandrel, a Flc-ace plate stationarily held onthe iframe vadjaoentisai'd eXpansible-en'd onth'e mandrel and fat'Fright `angles thereto, and :operative means for eciproea-ting saidmandrel, 5said means comprising irais-k @teeth orme'd fcompletelyasoundsaid lfinandrel, a *pinion learried by A*the frame inimesh WithYsaid teeth,

and means for revolvingthe vpinion.4

7; A device loflthel character described comprising a-bearin'g, amandrel mounted therein, rack teeth formedv completely around saidmandrel, a pinion'f'carried by the frame mesh With said teeth, means forrevolving saidpinionfsaid mandrel having a tapered end normallyprojecting fromk tlie bearing,

anexpansible 'and' contractile sleeve having* a tapered borerfittingsaid tapered end of the mandrel,andmeans jfor movingsaid sleeve axiallyonfsaid taperedy `portion to expand yor contraCtv said sleeve. ,i f I,'8. A"V device.l on the character described comprising a.; bearing,mandrel mounted therein, rack teeth formed completely around,v

said mandrel, apin-ion Vcarried bythe frame in `mesh with said teeth,meansy for revolving said pinion, said mandrel having ata-1 v jy peredend normally projecting from .the bearT ing, an expansib'le andcontractile 'sleeve fliavingf a tapered bore fitting saidtapercd end ofthe mandrel, and anutthread'ed on' the end ofthe-mandrel and ,collaredto the sleeve Vto adjust lthe sleevek axially v onltlie tapered endofthe-mandrel: to eXPando .contract'thesleev a t y y 9. A7 device o'fitheI characterkijdescribedV comprising ay partially A,split bearing, amanfdrelfmountedfin the bearing, afclamping screW'to contract thebearing? to clamp the mandrel therein, rack teeth formed aroundsaidmandrel at one end thereof, a Ypinion vmounted in the.l bearingin'mesh vvithjthe rack teeth, means forrevolving said pinion,l

, k'the-other endof'said mandrel 'beingltaperech l a splitnspring sleevehaving a't'apered bore coinciding with the taper of the mandrel," anut-threaded on the mandrel andcollarecl',r y tothe sleeve for axiallymovingr th'efsamevv on said tapered portionY to expander ceii-.-l tractVthe sleeve.-

10. Af device comprising a bearing 'having a bore, 'a man'-y drelmounted vin said bore,v a facejplatecar! ried by the bearing at'one' endthereof andextending at right angles relatively to the axis of themandrel, the'endl-oil saidmandrel adj acent said face plate being.tapered,

'la split sleeve having a .tapered bore coin-V cidingivith said taperedyend of the mandrel, and means for moving said sleeve axially on Y"contract the sleeve.`

of the character: described sleeve. e l

`one end of the mandrel k*and extending at right anglestothe axisofthe-mandrel, the

,being tapered, a split'sleeve havinga bore* coinciding With the Ataperof the* mandrel fend, a nut colla-red to said-sleeveandthread- Y, '65,1i ly fon said tapered'portion toezqyiandV yand 3 ed on the lmandrel tomovethesleevealxial` one endl Vvof the mandrel andV extending y atrightangles tothe axis of the mandrel, the l i end of themandr'elladjacent thev face plate being'tapered` a split lsleeve having'a bore coincidingwith the (taper'fof the mandrel mandrel being formedwith circurnscribing rack teeth, a pinion'mounted inthe bearing in.meshy with 'said teeth, g and imeans 'for reolving thefpinioii toreciprocate the man.- 'relf" n v *13, A device of the .characterdescribed' 12. device of; the .characterl'described comprising -abearing having-a' bore, a maiid rel`.mounted.in said bore, a'face plateat.

f comprising' a'bea'ring having a bor'e,`a mandrel mounted yin saidbore, la faceplate at` i one endet'. the, mandrel. and extending at'right angles to thev axis of themandrel, the

k"end |of themaridrel adjacentfthe faceplate:

being tapered, a split sleeve 'having a bore 'Y I coincidingvviththetaper ofthe mandrel end, j.l 1 a nut collared to said sleeve andthreaded'on f "L the mandrel tofmove vthe vsleeve axially C on saidtapered portion tol expand and contract `thesleeve, the other endof saidmandrel be# ing' formed With circumscribingjrack teeth, f

la pinion mounted'in tlie'bearing in mesh vvithvsaid teeth, and meansfor revolving the pinionto reciprocate the'fmandrel, said'bearjing beinglpartially split, andY a clamping screw to contract" the bearing toclamp the mandrel stationary'and render therack Vand pinion inoperative.

,MAURICE o; cox.

RALPH Bp. avan- 75 end, a nut collared vto saidlsleeve and threadv ed onthev mandrel tomovethe'sleeve axial-4 lyy onfsaid tapered portionftoVVexpandv and jcontrac't'the sleeve,ftlieA other' end ofsaid" so y

